Display problems at Boot Up (Windows PC)

When i boot up my PC the picture on my display is kind of zig zag and can move across the screen, restarting the machine normally three to four times solves the problem although the system still seems slugish at times.

I am an IT graduate and first assumed the problem may be related to my PSU which was a 550W Ultra PSU (I knew my system was pushing it to near its maximum as all online PSU calculators give me an average of 530W needed for my system although this is with everything on the system being fully stressed which it never is).

I decided to buy a new 880W Hiper PSU but I still have the same problem. I have purchased a socket tester and a PSU tester to try and source the problem but both always return normal results and say everthing is ok.

I have also played plenty of new(ish) games with all settings on max and the games play smoothly which makes me think that the graphics card is ok. BTW my Graphics Card is a His ATI X1950XTX which I know draws an awful lot of power but my PSU wshould be able to handle it seeing as two cheaper lower wattage PSU's handled it fine, even using molex to PCI-E converters.

I have run Memtest to test the memory (although I was sure this couldn't be the culprit) which is also good.

The only other hardware I have in my system is a Hard Drive and 4 Optical Drives which couldn't be the culprit.

I was just wondering if anyone has ever experienced this problem and could possibly enlighten me as to what the problem is?

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Try booting in safe mode with networking (press and hold F8) after pressing power button. Once in safe mode check display drivers are up to date, and try again.

Another way to check might be using any linux bootable CD. TO do this, download any liveCD image of any flavor of Linux, burn on a CD and boot off of it from this laptop. If the same thing happens, then its a hardware issue

Shut down your laptop and try pressing the center of the keybord just center of your screen firmly gently and then start the system if its ok the display comes back you are having problem with the heat sensor of the display card and not coooling properly .so loosing the display.
BUT if you mean there is a cursor blinking on the screen and dosent have display then your boot devices are configured improperly and so its searching for boot device .
also it happens when usb boot is enable in the bios and any usb device is connnected like flash or usb hard drive try to remove them and restart the pc.

option one: try to reboot your pc on safemode in order to use press f8 before the microsoft screen appears, then boot it to safemode, see if will display in safemode, now if the system display go to display properties and adjust your resolution to 640 x 480 or 800 x 600 and restart, the lcd screen may not support the resolution you have just set before, option two: if you have done option one and the same result have your notebook check for problems regarding the lcd screen

get a hirens boot disk. that will fix ya right up. boot from the disk. choose either option boot windows xp mini or from boot disk. do not choose the option boot from hard drive or you will get no-where.

It could be a memory problem,try removing one stick [if you have more than one] n then boot,later try booting with the one you removed.
The other problem could be overheating,check if the fans are working properly or if they are looking dusty then try cleaning it with some compressed air.disconnect any other components from the laptop,like the modem or wireless card.
There are other solutions but requires disconnecting cables from inside...I won't suggest you to do that unless you know how to do it.

Hello,
The simplest way to check this would be to boot your laptop in ms-dos mode or go to bios or any other non-windows related environment. Once you've done that, move the display lid back and forth, apply some preasure on it and check to see if the image flickers. This will be related with a loose connector from the graphics adapter to the lcd pannel. If this doesn't happen, the problem is windows related and maybe requires a clean windows reinstallation.
If you need more assistance please post back.